These include a range of formulations for thermionic and field effect surface emission, secondary emission from surfaces and from within volumes, and magnetized plasma emission the last of these being a specialized plasma emission module designed for the efficient analysis of magnetron sputter coating systems.
The hyperopic shift in refraction observed in ketamineâxylazine-anesthetized mice theoretically may be caused by either reduction in the axial length of the eye or changes in the refractive indices of the ocular media.
Antigenic shift is seen only with influenza A viruses. It results usually from the replacement of the hemagglutinin (the viral attachment protein that also mediates the entry of the virus into the cell) with a novel subtype that has not been present in human influenzaviruses for a long time.